Machine for bending flat metal strips into spirals



1929; H. s. POWELL 39,040

MACHINE FOR BENDING FLAT METAL STRIPS INTO SPIRALS Filed April 13, 1928 2 Sheets-Sheet l 'nne By HWMQM Gttorncg Dc. 10, 1929. I H. s. POWELL 1,739,040

MACHINE FOR BENDING FLAT METAL STRIPS INTO SPIRALS Filed April 13, 1928 ZSheets-Sheef 2 L l j fig 2 l'sllveutor- Mala /MM wwwf attorney Patented Dec. 10, 1929 NI'TED "Application file d April -13,

' My invention relates to a inaehinejfor'bending flat metal stripsinto spiralsmnd I declare the following to be a *full, clear, concise 'and exact description thereof 'siiflici'ent to 'eiiable 4,4, The=onterends of blocks 4, l are shouldered-j at 15, to ride-against the railslG, 16

"made integral with the respective standards 1, 1. Bearm blocks l e are supported imprei s tiers of exhaust engineawhereby to cause the top thereof by cover plates 3, 3. The open "4 preferably of someheavy material is mount- -50 mentioned vertical movable bearing blocks anyohe skilled in the art to which it-appertalins toinake and usethe sanie,reference be- 'had to the accompanying drawings in which like reference characters refer'to like parts throughout the specification.

The object Ofthe invehtion is'to "provide a niachinethatwill bender twist aflatstrip 01' band of metalinto aspiral. The flat strip thus bent into aspiral is cut at theproper' length for use morePparticiilarly in t ll llillfdetermined position by coiled springs 20, 20 x tllilt IeSt at one "end on the respe'ctive surface of shelves -21, 21*forh1'ed in standards 1, 1. The upper ends of coiled-springs 20,20 are coiled about-depending shafts--01- studs 22 secured or formed integral with the lower' surmm faceof each'ofbearing bloeks 4,4. StudsQQ, 22 extend a' short distance only into springs 20, iltl whereby to hold saidspringsr20y2O in position. Springs 20, 20 tend to force bearing blo cks l, 4 upward. They are HlOVGCbKg; "downward, however, against the tension of eprings ao, 20 i by adjustable screw bolts i 25, 25 -m'ounted in each instance in the cover plates 3, 3. The lower end: of each of the serew bolts 25 rests upoirthe upper surface of :7 a bearingblock l,ivher 'ebyito holdsaid block Fig. 2 is a centralvertical section tak'enon inpredeterminedposition. lloclenuts fiti, 26 l the line 2 2 ofFigL 1, parts beingshownin aramounted in eaclr instance upon adjustable full and parts broken away f screw bolts 25, 25 whiohn uts 26 can be turned down against the upper surface of cover 75 plates 3,"?3to -lock'screw bolts 25 in. give1rposition. I a

Upper shaft 5 with whiclrroller ti revolves "is extended laterally and unitiedto a connect- Reforring more particularly to the drawtag lil'rkSO by a universal joint formed bybr es ings the device embodies the frame compris- -i11rcat1ngtl1eends of 5 and l1nle30 reing upright standards 1, 1 mounted on a sta- "spe'ct'ively and pivotingsaldendsto bloeleifitl" tionary base 2. Each of the standards 1 has "by pivots30f, 3 0 Link 30 is jomed n-turn an open upper portion that is enclosed on the' by universaljoint-at 32 to shaft 83 which has bearii-igs 'in"auxiliary standard'fii. A spur a5 gear 35- is mo'ufnted toturn with shaft 33. spur ear =35 isin mesh with spur gear 36 of like diameter 'ELIid-mOUDtQCl to turn with shaft 12 with \vhich roller 11 also revolves. A spur #gear 40 of-anuch smaller "diameter is inniesh' fao ed to turn with shaft 5. Directly below roller with spurigear sfip Spur gear LO-is nfrounted (3 is roller 11 of the same size and material.'to=turnwvithshaft41 having bearingsin the Roller 11 is mounted to turn with shaft 12 walls l'i ofauxiliary stand'ardsflmfi l. A'pulhaving hearings in Walls 13, 13 of standards icy-42 isfixed toturn also with-shafti ll. Pula 1 ley 42 is connected by a belt 13 with power tifi 'lPtlllGY, not here shown. I The means fo r bend" IQEOI' twisting the metallicband 45e1iibodies rotatable disks and 51; which are mounted' on plate 52 :held in spaced relation from standards 1, 1 by four ino ekhaustgases to take'a swirling course asit passes througli the rear "part'of said muffler. 'lhe objectwillbe understood by referring to the drawings in which r Fig. 1 is afperspe ctive view*ofthe-deviee showing parts'broken away;

after passing through the machine; and

Fig. 4 is a detail view somewhat enlarged showing a perspective of a universal joint employed.

recesses in standards 1 are adapted for the sliding movement of vertically movable bearing blocks 4, 4 in which is journaled the respective ends of shaft 5. A roller 6 made The means for holding upper roller 6 in spaced relation to lower roller 11, whereby to allow for any given thickness of metal strip passed therebetween, embodies the above the standards.

brackets 55 that are connected by bolts 56 to Plate 52 has a round central recess 57 disposed opposite an imaginary plane passing between rollers 6 and 11, whereby metal strip or band can pass from between rollers 6 and 11 through plate 52 and disksand 51.

Disk 50 has a central annular elevation 58 on one face thereof that fits within the annular recess 57 of plate 52 in such manner as to turn therein. It has a central recess 60 for the passage of metalstrip 45. Disposed adjacent said recess '60 are two rollers 61, 61 mounted to rotate on shafts 61, 61 carried at each end in a bearing block or shelf 62 of which there are two oppositely disposed.

' i Rollers 61, 61 are spaced apart for the passage of metal strip 45. Bearing blocks 62, 62 are formed integral with disk 50. Set-bolts 63,

63 are screw-mounted in bearing blocks 62, 62

and are adapted to engage countersunk recesses made in shafts 61, 61", whereby to hold said'shafts in position.

Likewise disk51 has a central recess 76 i and mounted adjacent thereto are rollers 71, 71Ys'paced apart and on shafts 71 that are -;journaled in blocks 72, 72 formed integral with disk 51 and held therein by similar set Disks 50and 51 are held in assembled relationto .plate 52 by bolts 75', 75 that are projected-through alined sector recesses 76,

76 made in disks 50 and 51 and into threaded apertures in "13(13'52." Washers 78, 78 are on bolts 75 adjacent the heads thereof to 'spanrecessesI76, 76. Handles 80, 81 are bolted to disks 50 and 51, whereby to rotate the same with relation to each other in order to move the sets of rollers 61, 61 and 71, 71 to bend or effect a spiral to metal. band or strip 45.

A bracket 85 is bolted to standards 1, 1 to aid in directing band 45 between rollers 6 and I 11. It has mounted thereon two adjustable apertures made. in adjustable 'posts 80, 80 to span the space between posts 80, 80 whereby to prevent metal strip 45 from moving upward therepast. In operation metal strip 45 is fed from a spool, not shown, between posts 80, 80 under pin 87 and through rollers 6 and lland thencebetween the two sets of rollers 61, 61 and71, 71. Disks 50 and 51 will be rotated in the first instance, whereby to bring the spaces between said sets of rollers in alinement with the horizontal plane of strip 45 to be twisted. Thereafter disks 50 and 51' can be turned at any angle to each other to effect a ivenspiral'to metallic strip 45.

.he turning of master pulley 42 will actuate the train of' gears consisting of smaller spur gear 40, large spur gears 36, 35, whereby to rotate shafts 12 and 33 respectively and hence rollers 6 and 11.. The rotation of rollers 6 and 11 will push metallic strip 45 through the sets of rollers 61, 61 and 71, 71 to eifect a spiral to strip 45 in accordance with the relative positions to which said sets of rollers 61, 61 and 71, 71 are disposed to each other by manipulating handles 80 and 81 of disks 50, 51 respectively.

Having thus described my invention what I claim is new and desire to secure by Letters Patent, is as follows:

1. In a machine for bending flat metal strips into spirals, means for feeding a strip of metal in one plane, and rotary disks having rollers mounted thereon for twisting said strip of metal in other planes.

2. In a machine for bending fiat metal stripsinto spirals, rollers for twisting a strip of metal into a spiral, other rollers for pushing said strip of metal through said firstnamed means, and means for turning said first-named rollers relative to each other.

3. In a machine for bending fiat metal strips into spirals, adjustable rollers for feeding a strip of metal in one plane, and movable sets of rollers located ad acent said first-named rollers, whereby to twist said strip of metal. into a spiral.

4. Ina machine for bending flat metal strips into spirals, adjustable rollers for feeding a strip of metal in a given plane, and rotatable disks having rollers mounted thereon for bending said strips of metal into a spiral.

5. In a machine for bending flat metal strips into spirals, adjustable rollers for actuating a strip of metal in a given plane, rotatable disks mounted adjacent said adjustable rollers, and other rollers rotated on said-disks, whereby to aid in twisting said strip of metal into a spiral.

In testimony whereof I have afiixed my signature.

HERBERT S. POWELL. 

